NXP LPC11Uxx series 32-bit ARM Cortex-M0 MCU, 50 MHz, 32 KB Flash, 6 KB RAM, USB 2.0 device, 40 GPIO, 8x10-bit ADC, -40 to 85 °C, 48-LQFP.
| Parameter | Value |
|---|---|
| Series | LPC11Uxx |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.8V ~ 3.6V |
| Operating temperature | -40°C ~ 85°C (TA) |
| Speed | 50MHz |
| Package | Tray |
| RAM size | 6K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, POR, WDT |
| Connectivity | I²C, Microwire, SmartCard, SPI, SSP, UART/USART, USB |
| Number of i (O) | 40 |
| Core processor | ARM® Cortex®-M0 |
| Case | 48-LQFP |
| Data converters | A/D 8x10b |
| Program memory size | 32KB (32K x 8) |
At 50 MHz, this core can poll USB endpoints, service a UART buffer, and toggle GPIOs without dropping packets. The Cortex-M0 is a von Neumann, single-cycle I/O architecture.
The brown-out detect and POR circuits keep the core from running on a glitchy supply during cold starts or hot restarts. Not rated for under-hood or engine-bay environments — that would need an AEC-Q100 grade part.
The supply range is 1.8 V to 3.6 V, covering both 1.8 V and 3.3 V logic rails.
Yes, it has a built-in USB 2.0 full-speed device controller with integrated transceiver, supporting control, bulk, interrupt, and isochronous transfers.
The LPC11U series shares the same 48-LQFP pinout across Flash density options — a part with 64 KB or 128 KB Flash in the same footprint is a direct drop-in replacement if more code space is needed.
The core runs at 50 MHz, delivering roughly 45 DMIPS from the ARM Cortex-M0 pipeline.